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testhread.c
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/* Simple test of the SDL threading code */
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "SDL.h"
#include "SDL_thread.h"
static int alive = 0;
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/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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static void
quit (int rc)
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SDL_Quit ();
exit (rc);
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int SDLCALL
ThreadFunc (void *data)
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printf ("Started thread %s: My thread id is %u\n",
(char *) data, SDL_ThreadID ());
while (alive) {
printf ("Thread '%s' is alive!\n", (char *) data);
SDL_Delay (1 * 1000);
}
printf ("Thread '%s' exiting!\n", (char *) data);
return (0);
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}
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static void
killed (int sig)
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printf ("Killed with SIGTERM, waiting 5 seconds to exit\n");
SDL_Delay (5 * 1000);
alive = 0;
quit (0);
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}
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int
main (int argc, char *argv[])
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SDL_Thread *thread;
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/* Load the SDL library */
if (SDL_Init (0) < 0) {
fprintf (stderr, "Couldn't initialize SDL: %s\n", SDL_GetError ());
return (1);
}
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alive = 1;
thread = SDL_CreateThread (ThreadFunc, "#1");
if (thread == NULL) {
fprintf (stderr, "Couldn't create thread: %s\n", SDL_GetError ());
quit (1);
}
SDL_Delay (5 * 1000);
printf ("Waiting for thread #1\n");
alive = 0;
SDL_WaitThread (thread, NULL);
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alive = 1;
thread = SDL_CreateThread (ThreadFunc, "#2");
if (thread == NULL) {
fprintf (stderr, "Couldn't create thread: %s\n", SDL_GetError ());
quit (1);
}
SDL_Delay (5 * 1000);
printf ("Killing thread #2\n");
SDL_KillThread (thread);
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alive = 1;
signal (SIGTERM, killed);
thread = SDL_CreateThread (ThreadFunc, "#3");
if (thread == NULL) {
fprintf (stderr, "Couldn't create thread: %s\n", SDL_GetError ());
quit (1);
}
raise (SIGTERM);
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SDL_Quit (); /* Never reached */
return (0); /* Never reached */